CN207060284U - A kind of Novel stretchable folding bicycle - Google Patents

Abstract

It the utility model is related to a kind of Novel stretchable folding bicycle, including upper tube, seat pipe, head tube Seat stay, Chain stay and stem, stem coaxial line is inserted in head tube, and upper tube includes the first upper tube that tail end is connected with stage casing upper tube with seat pipe Joint, head end coaxial line.In stage casing, the outer surface coaxial line of upper tube is arranged with the second upper tube, head end and the head tube Joint of the second upper tube, and the second upper tube can be slided along the axis direction of stage casing upper tube.Also include the second upper tube and stage casing upper tube being fixed on into fixed position, the first fastener that can also be discharged from the fixed position.Stem is stood including the first, second vertical and the 3rd standing, and second vertical both ends are stood by universal joint with the first respectively and second stand is connected.Positioning sleeve is arranged with the hinged end outer surface coaxial line of universal joint, positioning sleeve, which is provided with, to be fixed on ad-hoc location by the hinged end of positioning sleeve and universal joint, the second fastener that can be also discharged from the position.

Description

A kind of Novel stretchable folding bicycle

Technical field

It the utility model is related to technical field of bicycles, more particularly to a kind of Novel stretchable folding bicycle.

Background technology

At present, with the continuous ripe and wound of health of people, the continuous reinforcement of green living consciousness and bike tech Newly, bicycle has become that the whole world is the simplest, the most practical and most commonly used vehicles of people.

And with advances in technology and people it is easy to use to bicycle degree require lifting, have folder function from Driving receives the increasingly favor of people.Need to set fold mechanism on the vehicle frame of folding bicycle, existing fold mechanism leads to Often it is the folder on vehicle frame, such a fold mechanism requirement fully takes into account folding machine in the design of cycle frame The installation and debugging of structure and the quality of overall performance, this directly improves the overall difficulty of Vehicle Frame Design；Meanwhile foldable legs Although treadmill can fold, the distance between front axle and hind axle can not be adjusted, in other words, foregoing rolls over Folded bicycle can pass through the mode folded and reduce volume, realize the purpose being convenient for carrying, but can not arbitrarily adjust pin The size of treadmill is with the user of suitable different statures.

Utility model content

The utility model provides a kind of mechanism design advantages of simple, behaviour to solve technical problem present in known technology Make easily Novel stretchable folding bicycle, can be achieved to fold and adjust the function of dimension of bicycle frame.

The utility model is adopted the technical scheme that to solve technical problem present in known technology：Including upper tube, Seat pipe, Seat stay, Chain stay and stem, head tube, the tail end of upper tube and the middle and upper part of seat pipe are connected with the head end of upper tube Joint, the head end of Chain stay and the lower end Joint of seat pipe, the head end of Seat stay and the middle and upper part Joint of seat pipe, Seat stay Converged with the tail end of both Chain stays and be provided with dropout, stem coaxial line is inserted in head tube, and the upper tube includes tail End is connected with the first upper tube of stage casing upper tube with seat pipe Joint, head end coaxial line；The outer surface coaxial line set of upper tube in stage casing Provided with the second upper tube, head end and the head tube Joint of the second upper tube, second upper tube can be slided along the axis direction of stage casing upper tube It is dynamic；Also include the first fastener, the second upper tube and stage casing upper tube can be fixed on relatively motionless fixed bit by first fastener Put, can also be discharged from the fixed position；

The stem is stood including the first, second vertical and the 3rd standing, and the second vertical both ends lead to respectively Cross that universal joint and the first are vertical and second stand is connected；Positioning is arranged with the hinged end outer surface coaxial line of universal joint Set, the positioning sleeve are provided with the second fastener, and second fastener can fix the hinged end of positioning sleeve and universal joint In relatively motionless fixed position, can also be discharged from the fixed position.

The advantages of the utility model and good effect are：The utility model provides a kind of Novel stretchable and folded voluntarily Car, compared with existing bicycle, the utility model sets universal joint and positioning sleeve on standpipe, and universal joint is located at head tube Both sides, the folding and expansion of bicycle are realized in the position by adjusting positioning sleeve, easy to operate, and vehicle frame is integrally-built steady It is qualitative, for ease of maintenaince；The locking of the first fastener is released, the second upper tube is slided to locking first behind matters position along stage casing upper tube Fastener is the size regulation that cycle frame can be achieved, simple to operate, with the excellent of the user's riding for being adapted to different statures Point.

Preferably：Offer long and narrow through hole along its length in the upper tube of stage casing, and first fastener is one Kind quick-disassembly structure；Quick-disassembly structure includes through the cross section of the second upper tube and through hole and passes the pull bar on the outside of the second upper tube；Draw One end of bar is arranged with cushion pad and is hinged with the spanner with cam, and the other end of pull bar is threaded and is screwed with positioning spiral shell It is female.

Preferably：The hinged end of the universal joint is respectively on the outside of the both ends of head tube.

Preferably：Second fastener is a kind of quick-disassembly structure, internal thread is set on the inwall of positioning sleeve and in car The external screw thread to match with the internal thread is set on handle riser, and the external screw thread is positioned close to universal joint hinged end and remote From the position of head tube end.

Preferably：Bottom bracket axle is connected with the head end of Chain stay.

Preferably：Set up between the middle front part and bottom bracket axle of the first upper tube and be connected with down tube.

Brief description of the drawings

Fig. 1 is preferred main structure diagram of the present utility model；

Fig. 2 is the broken section structural representation that vehicle frame of the present utility model is under deployed condition；

Fig. 3 is the broken section structural representation that vehicle frame of the present utility model is under expansion and size reduction state；

Fig. 4 is the sectional view that the first fastener is in the lock state lower upper tube；

Fig. 5 is the cross section structure diagram of the first fastener；

Fig. 6 is the structural representation that cycle frame is under folded state.

In figure：1st, upper tube；101st, dropout；111st, the first upper tube；112nd, the second upper tube；12nd, stage casing upper tube 121, through hole； 13rd, the first fastener；131st, spanner；132nd, cam；133rd, cushion pad；134th, pull bar；135th, location nut；2nd, seat pipe；3rd, after Upper fork；4th, Chain stay；5th, bottom bracket axle；6th, down tube；7th, head tube；8th, standpipe；81st, the first is stood；82nd, it is second vertical；83rd, the 3rd It is vertical；84th, universal joint；85th, positioning sleeve；851st, the second fastener；9th, front fork assembly.

Embodiment

For invention, features and effects of the present utility model can be further appreciated that, hereby lift following examples and describe in detail It is as follows：

Fig. 1 to Fig. 6 is referred to, the utility model includes upper tube 1, seat pipe 2, Seat stay 3, Chain stay 4 and stem 8, Head tube 7, the tail end of upper tube 1 and the middle and upper part Joint of seat pipe 2, the head end and seat pipe of Chain stay 4 are connected with the head end of upper tube 1 The tail end of both 2 lower end Joint, the head end of Seat stay 3 and the middle and upper part Joint of seat pipe 2, Seat stay 3 and Chain stay 4 Converge and be provided with dropout 101, the coaxial line of stem 8 is inserted in head tube 7, and passes through upper bowl group (not shown) and lower bowl group (not shown) is flexibly connected with head tube 7.The upper tube 1 includes tail end and is connected with the Joint of seat pipe 2, head end coaxial line on stage casing First upper tube 111 of pipe 12.In stage casing, the outer surface coaxial line of upper tube 12 is arranged with the second upper tube 112, the head of the second upper tube 112 End and the Joint of head tube 7, second upper tube 112 can be slided along the axis direction of stage casing upper tube 12.Also include the first fastener 13, the second upper tube 112 and stage casing upper tube 12 can be fixed on relatively motionless fixed position by first fastener 13, can also be from The fixed position discharges.Also include being arranged on the front fork assembly 9 of the lower end of stem 8 and the front wheels and rear wheels of bicycle.This The upper bowl group and lower bowl group that utility model is mentioned are the common knowledge of the art.

With further reference to Fig. 1 to Fig. 3, the stem 8 includes the first vertical 81, second vertical 82 and the 3rd vertical 83, second vertical 82 both ends are connected by universal joint 84 with the first vertical 81 and second vertical 82 respectively.Ten thousand Positioning sleeve 85 is arranged with to the hinged end outer surface coaxial line of joint 84, the positioning sleeve 85 is provided with the second fastener 851, should The hinged end of positioning sleeve 85 and universal joint 84 can be fixed on relatively motionless fixed position by the second fastener 851, also may be used To be discharged from the fixed position.

With further reference to Fig. 2, Fig. 4 and Fig. 5, long and narrow through hole 121 is offered along its length in stage casing upper tube 12, And first fastener 13 is a kind of quick-disassembly structure.Quick-disassembly structure is included through the cross section of the second upper tube 112 and through hole 121 And pass the pull bar 134 in the outside of the second upper tube 112.One end of pull bar 134 is arranged with cushion pad 133 and is hinged with cam 132 spanner 131, the other end of pull bar 134 are threaded and are screwed with location nut 135.

The hinged end of the universal joint 84 is respectively on the outside of the both ends of head tube 7.

For the ease of operation, second fastener 851 is a kind of quick-disassembly structure, the spiral shell in setting on the inwall of positioning sleeve 85 Line and the external screw thread to match with the internal thread is set on stem 8, external screw thread is positioned close to universal joint 84 and cut with scissors Connect end and the position away from the end of head tube 7.

As shown in figure 1, the head end in Chain stay 4 is connected with bottom bracket axle 5.In the middle front part and bottom bracket axle 5 of the first upper tube 111 Between set up be connected with down tube 6.

Compared with existing bicycle, the utility model sets universal joint and positioning sleeve on standpipe 8, and universal joint is located at The both sides of head tube 7, the folding and expansion of bicycle are realized in the position by adjusting positioning sleeve, easy to operate, and vehicle frame is integrally tied The stability of structure, for ease of maintenaince.The locking of the first fastener 13 is released, the second upper tube 112 is slided along stage casing upper tube 12 and arrives matters The size regulation that cycle frame can be achieved in the first fastener 13 is locked behind position, it is simple to operate, have and be adapted to different statures User riding the advantages of.

Claims (6)

1. a kind of Novel stretchable folding bicycle, including upper tube (1), seat pipe (2), Seat stay (3), Chain stay (4) and handlebar Standpipe (8), head tube (7), the tail end of upper tube (1) and the middle and upper part Joint of seat pipe (2) are connected with the head end of upper tube (1), after The head end of lower fork (4) and the lower end Joint of seat pipe (2), the head end of Seat stay (3) and the middle and upper part Joint of seat pipe (2), after The upper tail end for pitching both (3) and Chain stay (4) converges and is provided with dropout (101), and stem (8) coaxial line is inserted in head tube (7) in, it is characterized in that：The upper tube (1) includes tail end and is connected with stage casing upper tube with seat pipe (2) Joint, head end coaxial line (12) the first upper tube (111)；In stage casing, the outer surface coaxial line of upper tube (12) is arranged with the second upper tube (112), the second upper tube (112) head end and head tube (7) Joint, second upper tube (112) can be slided along the axis direction of stage casing upper tube (12)；Also Including the first fastener (13), the second upper tube (112) and stage casing upper tube (12) can be fixed on relatively by first fastener (13) Motionless fixed position, it can also be discharged from the fixed position；

The stem (8) includes the first and stands (81), second vertical (82) and the 3rd vertical (83), described second vertical (82) (81) and second vertical (82) are stood with the first by universal joint (84) respectively and are connected in both ends；In universal joint (84) hinged end outer surface coaxial line is arranged with positioning sleeve (85), and the positioning sleeve (85) is provided with the second fastener (851), The hinged end of positioning sleeve (85) and universal joint (84) can be fixed on relatively motionless fixed bit by second fastener (851) Put, can also be discharged from the fixed position.

2. Novel stretchable folding bicycle as claimed in claim 1, it is characterized in that：In stage casing upper tube (12) along its length Direction offers long and narrow through hole (121), and first fastener (13) is a kind of quick-disassembly structure；Quick-disassembly structure include through The cross section of second upper tube (112) and through hole (121) simultaneously pass the pull bar (134) on the outside of the second upper tube (112)；Pull bar (134) One end be arranged with cushion pad (133) and be hinged with the spanner (131) with cam (132), the other end of pull bar (134) carries Screw thread and it is screwed with location nut (135).

3. Novel stretchable folding bicycle as claimed in claim 1, it is characterized in that：The hinged end of the universal joint (84) Respectively on the outside of the both ends of head tube (7).

4. Novel stretchable folding bicycle as claimed in claim 1, it is characterized in that：Second fastener (851) is one Kind quick-disassembly structure, internal thread and setting and the internal thread phase on stem (8) are set on the inwall of positioning sleeve (85) The external screw thread of matching, the external screw thread are positioned close to universal joint (84) hinged end and the position away from head tube (7) end.

5. Novel stretchable folding bicycle as claimed in claim 1, it is characterized in that：It is connected with the head end of Chain stay (4) Bottom bracket axle (5).

6. Novel stretchable folding bicycle as claimed in claim 5, it is characterized in that：Middle front part in the first upper tube (111) Set up between bottom bracket axle (5) and be connected with down tube (6).